The Washington Examiner columnist slammed Democrats' vetting of Platner, saying the fallout has left them embarrassed amid a growing political frenzy.

Maine Democratic Senate candidate Graham Platner denied the allegation, but said he would be considering next steps for his campaign.

Monday's accusations are the latest in a long string of controversies surrounding the Maine Democratic Senate candidate.

Democrats are divided over who bears responsibility for Graham Platner's rise after new allegations reignited questions about candidate vetting.